Refrigerating Specialties Division

Fresh food of the highest quality.

We know the delicate balance of flavor is tied to carefully controlled conditions. IRD components help provide precise temperature control for your storage and processing facilities – keeping perishable products at their peak for freshness.

Valve Selection Program

Check out our new Valve Selection Program (VSP). Learn how Parker can simplify your sizing, selection and ordering with our new VSP tool. See a demo of our new selection program and see how we can simplify your valve sizing, selection and ordering process.


This catalog provides product overview, specifications, general information, application guide and refrigerant selection tables to aid in selecting a specific product. Additional information, in the appendices, provide schematic flow diagrams for regulators, dimensional information on entire product line, valve torque specification and safety information.


This catalog provides product data-sheets of Herl valves and components, operating instructions, how to order information and contact addresses. Additional information, in the appendices, provide CE declaration of conformity and safety guide.

Parker’s ChillMaster P-T Chart App

Proper analysis of the P-T relationship can help service technicians diagnose a refrigeration system issue quickly.  More than 70 refrigerants available.

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Need assistance with product identification or information? Contact our customer care team and a product expert will respond to your request.

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Find resources for selecting and using Parker products including CAD, literature, videos, demos, training, apps, etc.